Dump-car.



A. CAMPBELL.

DUMP OAR.

APPLICATION FILED JAN. 27, 1909.

Patented Dec. 6, 1910.

3 BHBETSBHEET 1.

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A. CAMPBELL.

DUMP GAR.

APPLICATION FILED JAN. 27, 1909.

Patented Dec. 6, 1910.

3 SHEETSBHEET 2.

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A. CAMPBELL.

DUMP OAR.

APPLICATION FILED JAN. 27, 1909.

Patented Dec. 6, 1910.

3 SHEETS-SHEET 3.

UNITED STATES ATENT OFFICE? ARGYLE CAMPBELL, OF CHICAGO, ILLINOIS,ASSIGNOR TO ENTERPRISE RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS,A CORPORATION OF ILLINOIS.

DUMP-GAR.

Application filed January 27, 1909.

To all whom it may concern:

Be it known that I, ARGYLE CAMPBELL, a citizen of the United States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Dump-Cars, of which thefollowing is a specification.

My invention relates to improvements dump cars.

My invention consists in a dump car, the body of which is provided inits bottom with a series of tandem arranged discharge openings extendinglongitudinally between the center sills a greater distance than theclear space between the car wheels, in connection with a plurality oftandem pairs of longitudinally hinged doors closing said dischargeopenings, the two left side doors of two adjacent tandem pairs beingconnected together by bridge members spanning the transverse sill orframe member of the car body so that said two left side door members maybe operated together as one, and the two right side doors of such pairsbeing likewise connected together by a bridge member and similarly sooperated as one, and the two right side and the two left side doors ofthe two tandem arranged pairs being connected to and simultaneouslyoperated by one andthe same door operating mechanism.

My invention further consists in the novel construction of parts anddevices and in the novel combinations of parts and devices herein shownand described.

In the accompanying drawing forming a part of this specification, Figure1 is a side elevation of a dump car embodying my invention, oneduplicate half of the car being omitted. Fig. 2 is a plan view of thesame. Fig. 3 is a vertical cross section.

In the drawing, 1 represents the body of a dump car having upright sides2 and bottom or floor 3, furnished with a series of tandem arrangeddischarge openings 4 extending between the center sills 5 a greaterdistance than the clear space between the innermost wheels 6 of the car,the tandem arranged discharge openings 4 being separated from each otherby the transverse sills, transoms or frame members 7 of the car body.The terminal discharge openings 4 extend at each end of the car betweenthe car wheels 6, 6 on opposite sides of the car. At each end of the caradjacent to the end Specification of Letters Patent.

Patented Dec. 6, 1910.

Serial No. 474,395.

of the terminal discharge opening 4, the bottom or floor of the car isprovided with an inclined end or bottom plate 8.

The tandem arranged discharge openings 4, 4 for each longitudinal halfof the car body are closed by two tandem arranged pairs of doors, 9, 10and 11, 12. Each pair of doors 9, 10 and 11, 12 are connected by hinges13 to the car frame at the longitudinal side edges of the dischargeopenings 4, 4. The two doors, 9, 11, on the one side of the central,longitudinal line of the car, of two adjacent tandem arranged pairs arerigidly connected together by a bent bridge member 14 which is securelybolted or riveted on the under sides of said doors 9, 11, said bentbridge member spanning the transverse frame member 7 of the car body,which extends transversely between the pair of doors 9, 10 and the pairof doors 11, 12. The two doors 10, 12 on the other side of thelongitudinal central line of the car of the two adjacent tandem arrangedpairs of doors 9, 10 and 11, 12 are likewise rigidly connected togetherby a similar bent bridge member 14. The connected doors 9, 11 and theconnected doors 10, 12 may be simultaneously opened and closed by anysuitable door operating mechanism. The door operating mechanism,however, which I prefer to employ, and which is illustrated in thedrawing, consists essentially of a short operating shaft 15 furnishedwith a polygonal or four sided drum 16 around which is Wound fourconnecting links 17 18, 19 and 20, the terminal link 17 having a lockingshoulder 21 which engages a locking shoulder 22 on the drum, and whichterminal link 17 through a supplemental link 23, is connected byconnecting chains 24 and 25 with the bridge members 14 and 14 of theside doors 9, 11 and the side doors 10, 12. The short operating shaft 15is journaled in suitable brackets 26 attached to the car body near oneside thereof, and this operating shaft is furnished with a suitableoperating lever 27 having a pawl engaging a ratchet on the operatingshaft 13.

The bottom or floor 3 of the car body at each side of thecenter sills 5is preferably composed of long, continuous steel plates 28, which maypreferably extend continuously for half the length or the whole lengthof the car body, and each of which preferably extends in width from thecenter sill 5 to the outer longitudinal edge of the car body and isprovided at such outer longitudinal edge with an integral upturnedflange 29 and at its inner edge with an integral downturned flange 30which may preferably be as deep as the center sills. These deep flangedcontinuous floor plates 28 thus materially strengthen the center sillsand car framework, and thereby materially reduce the cost of the car.

As in my invention a single door operating mechanism suffices for theoperation of four doors or two tandem arranged pairs of doors, therights and lefts of the two pairs being connected together by the bridgemembers 14, the construction and operation of the car is further greatlysimplified and its cost materially reduced. And as in my invention, thetandem arranged discharge openings extend longitudinally of the carbetween the center sills for a greater dis tance than the clear spacebetween the two innermost pairs of wheels, I am enabled with my dump carto discharge nearly the entire load without handling or shoveling.

Another important feature in the type of this car is the simple andinexpensive meclr anism for closing the doors which as already mentionedis done by means of a very short shaft longitudinally of the car and itslocation being parallel to the hinged edge of the door and forconvenience at the outer side of the car.

I claim 1. The combination of a car body, a series of tandem arrangedlongitudinally hinged doors, transverse transoms extending between theends of the adjacent doors, a short longitudinal operating shaft underone of said transoms less in length than one door arranged to operate aplurality of doors, substantially as specified.

2. The combination of a car body with tandem arranged longitudinallyhinged doors, transverse transoms extending betyveen the ends of theadjacent doors, a short longitudinal shaft under one of said transomswith a drum thereon and connections to doors amanged to close aplurality of openings, said operating shaft being less in length than asingle opening, substantially as specified.

ARGYLE CAMPBELL.

Witnesses H. N. lMiUNDAY, PEARL ABnaMs.

